He stopped by a window at the end of a short side passage.

But there were no side passages, so they could not lose their way.

The rest of the group was waiting for him outside an elevator in a narrow side passage.

"Though it would be easy enough for him to get past us through the side passages."

These indicated the short side passages that led to rooms on the second floor.

The light got brighter, and a moment later about a dozen people came through one of the side passages.

He didn't bother with any of the immediate side passages.

They walked back through, looking for side passages, but there were none.

Thus one side passage had doors 314 and 315 opposite.

There were few doors here, and side passages led from the single corridor.